ADJECTIVE (2)

1. relating to a clinic or conducted in or as if in a clinic and depending on direct observation of patients;
- Example: "clinical observation"
- Example: "clinical case study"

2. scientifically detached; unemotional;
- Example: "he spoke in the clipped clinical monotones typical of police testimony"

The Collaborative International Dictionary of English v.0.48:

Clinical \Clin"ic*al\ (kl[i^]n"[i^]k*al), Clinic \Clin"ic\
   (kl[i^]n"[i^]k), a. [Gr. kliniko`s, fr. kli`nh bed, fr.
   kli`nein to lean, recline: cf. F. clinique. See Lean, v.
   i.]
   1. Of or pertaining to a bed, especially, a sick bed.
      [1913 Webster]

   2. Of or pertaining to a clinic, or to the study of disease
      in the living subject.
      [1913 Webster]

   Clinical baptism, baptism administered to a person on a
      sick bed.

   Clinical instruction, instruction by means of clinics.

   Clinical lecture (Med.), a discourse upon medical topics
      illustrated by the exhibition and examination of living
      patients.

   Clinical medicine, Clinical surgery, that part of
      medicine or surgery which is occupied with the
      investigation of disease in the living subject.
      [1913 Webster]

WordNet (r) 3.0 (2006):

clinical
    adj 1: relating to a clinic or conducted in or as if in a clinic
           and depending on direct observation of patients;
           "clinical observation"; "clinical case study"
    2: scientifically detached; unemotional; "he spoke in the
       clipped clinical monotones typical of police testimony"

Moby Thesaurus II by Grady Ward, 1.0:

19 Moby Thesaurus words for "clinical":
   allopathic, chiropodic, chiropractic, dental, exodontic,
   homeopathic, hydropathic, iatric, medical, naturopathic,
   neurological, obstetric, orthodontic, orthopedic, osteopathic,
   pediatric, periodontic, prosthodontic, surgical